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Rossi, F.; Lee, J.; Yoshimi, Yuki*; Hironaka, Kota; Shiba, Tomooki; Terada, Kazushi*; Hori, Junichi*
KURNS Progress Report 2025, P. 97, 2026/06
Hanasaki, Noriaki*; Hattori, Takayuki*; Komoda, Takumi*; Minamoto, Kakuei*; Torigoe, Shuhei*; Yamashita, Satoshi*; Nakazawa, Yasuhiro*; Nakano, Takehito*; Yoshimi, Kohei*; Yashima, Mitsuharu*; et al.
Proceedings of the National Academy of Sciences of the United States of America, 123(1), p.e2517926123_1 - e2517926123_6, 2026/01
Times Cited Count：1 Percentile：76.89(Multidisciplinary Sciences)Rossi, F.; Lee, J.; Yoshimi, Yuki*; Shiba, Tomooki; Terada, Kazushi*; Hori, Junichi*
Dai-46-Kai Nihon Kaku Busshitsu Kanri Gakkai Nenji Taikai Kaigi Rombunshu (Internet), 4 Pages, 2025/12
Rossi, F.; Lee, J.; Yoshimi, Yuki*; Hironaka, Kota; Koizumi, Mitsuo; Shiba, Tomooki; Terada, Kazushi*; Hori, Junichi*
ESARDA Bulletin, (67), p.59 - 67, 2025/12
Takahashi, Tone; Koizumi, Mitsuo; Yoshimi, Yuki*; Mochimaru, Takanori*
JAEA-Technology 2025-007, 26 Pages, 2025/11
JAEA-Technology-2025-007.pdf:1.6MB
To prevent the smuggling of nuclear and radioactive materials into event venues for the purpose of terrorism, it is common practice to individually inspect people and vehicles entering and exiting using radiation detectors. However, since there remains a risk of such inspections being bypassed, it is necessary to complement them with a wide-area radiation survey to ensure that no nuclear or radioactive materials have been brought in. Radiation mapping is an effective method for efficiently surveying large areas. In this method, a gamma-ray detector equipped with GPS is used to record location data and radiation dose rates while moving. By utilizing network connectivity, measurement data from multiple detectors can be aggregated at a central command post, allowing real-time monitoring of survey progress. This system helps to prevent both redundant and missing measurements and enables the prompt detection of suspicious radiation sources. Furthermore, by incorporating spectrometers into the gamma -ray detectors, it becomes possible to identify radioactive isotopes, thereby enabling appropriate responses. To enable such wide-area radiation surveys, we developed real-time mapping software. The developed software receives measurement data transmitted from GPS-equipped gamma-ray spectrometers, processes it sequentially in real time, and plots it onto pre -downloaded map data. Additionally, by integrating the spectral data collected from regions showing abnormal radiation levels can be displayed immediately. To enhance information security, the software is designed to function within local networks without requiring internet connectivity. In this report, we introduce an overview of the developed software and provide a simplified version of the source code as an appendix. The provided code is developed using open and free operating systems, libraries, and environments, making it freely available and usable by anyone.
Takahashi, Tone; Mochimaru, Takanori*; Koizumi, Mitsuo; Yoshimi, Yuki*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*; Ito, Fumiaki*
JAEA-Review 2025-039, 34 Pages, 2025/11
JAEA-Review-2025-039.pdf:2.18MB
To prevent acts of terrorism involving nuclear or radioactive materials at major public events, it is required to have surveillance technologies that either prevent these materials from being brought in or detect quickly if somebody brings them in secretly. Setting radiation gate monitors to survey pedestrians and vehicles is one of the effective methods. However, considering the possibility of individuals bypassing these monitors, complementary technologies are needed to continuously survey areas inside the gates. To survey extensive areas, radiation mapping is effective. By using multiple detectors and aggregating the data, the survey becomes much more efficient. We have developed mobile detectors capable of simultaneously measuring location data and radiation levels outdoors, with the ability to aggregate measurement results via a network and immediately visualize them on a map. For indoor environments, we have developed a technology that integrates radiation measurement results with environmental mapping created using SLAM (Simultaneous Localization and Mapping) to produce 3D maps of the surveyed areas. Additionally, we have been working on the development of a source search technology using a fast neutron detector to quickly detect neutron sources, including nuclear materials. In this report, we describe a concept of the wide area survey system and report technology development results so far.
Wallerberger, M.*; Badr, S.*; Hoshino, Shintaro*; Huber, S.*; Kakizawa, Fumiya*; Koretsune, Takashi*; Nagai, Yuki; Nogaki, Kosuke*; Nomoto, Takuya*; Mori, Hitoshi*; et al.
Software X (Internet), 21, p.101266_1 - 101266_7, 2023/02
Times Cited Count：43 Percentile：93.81(Computer Science, Software Engineering)no abstracts in English
Ohae, Chiaki*; Harries, J.; Iwayama, Hiroshi*; Kawaguchi, Kentaro*; Kuma, Susumu*; Miyamoto, Yuki*; Nagasono, Mitsuru*; Nakajima, Kyo*; Nakano, Itsuo*; Shigemasa, Eiji*; et al.
Journal of the Physical Society of Japan, 85(3), p.034301_1 - 034301_10, 2016/03
Times Cited Count：9 Percentile：50.77(Physics, Multidisciplinary)Kakudate, Satoshi; Oka, Kiyoshi; Yoshimi, Takashi*; Hiyama, Masayuki; Taguchi, Ko*; Shibanuma, Kiyoshi; Koizumi, Koichi; Matsumoto, Yasuhiro*; Honda, Tsutomu*; Haange, R.*
Nuclear Fusion, 42(3), p.243 - 246, 2002/03
Times Cited Count：3 Percentile：10.27(Physics, Fluids & Plasmas)no abstracts in English
Hiyama, Masayuki; Oka, Kiyoshi; Kakudate, Satoshi; Yoshimi, Takashi*; Shibanuma, Kiyoshi; Koizumi, Koichi
Robotikusu, Mekatoronikusu Koenkai '00 Koen Rombunshu, (2P2-11-008), p.1 - 2, 2000/05
no abstracts in English
Yoshimi, Takashi*; Kakudate, Satoshi; Oka, Kiyoshi; Hiyama, Masayuki; Taguchi, Ko*; Shibanuma, Kiyoshi; Koizumi, Koichi
Robotikusu, Mekatoronikusu Koenkai '00 Koen Rombunshu, (2P2-11-006), p.1 - 2, 2000/05
no abstracts in English
Mochimaru, Takanori*; Koizumi, Mitsuo; Takahashi, Tone; Yamaguchi, Ikuto*; Yoshimi, Yuki*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*; Tanigaki, Minoru*; Harada, Hiroshi*; Masaki, Hiroko*; et al.
no journal, ,
no abstracts in English
Yamaguchi, Ikuto*; Koizumi, Mitsuo; Takahashi, Tone; Mochimaru, Takanori*; Yoshimi, Yuki*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*; Tanigaki, Minoru*; Harada, Hiroshi*; Masaki, Hiroko*; et al.
no journal, ,
no abstracts in English
Takahashi, Tone; Koizumi, Mitsuo; Mochimaru, Takanori*; Yamaguchi, Ikuto*; Yoshimi, Yuki*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*; Tanigaki, Minoru*; Harada, Hiroshi*; Masaki, Hiroko*; et al.
no journal, ,
no abstracts in English
Koizumi, Mitsuo; Takahashi, Tone; Mochimaru, Takanori*; Yamaguchi, Ikuto*; Yoshimi, Yuki*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*; Tanigaki, Minoru*; Harada, Hiroshi*; Masaki, Hiroko*; et al.
no journal, ,
no abstracts in English
Takahashi, Tone; Koizumi, Mitsuo; Mochimaru, Takanori*; Yoshimi, Yuki*; Saito, Tsubasa*
no journal, ,
no abstracts in English
(Ce) detector system for real-time wide area surveyTakahashi, Tone; Koizumi, Mitsuo; Mochimaru, Takanori*; Yoshimi, Yuki*
no journal, ,
Rossi, F.; Lee, J.; Yoshimi, Yuki*; Hironaka, Kota; Shiba, Tomooki
no journal, ,
Harries, J.; Ohae, Chiaki*; Iwayama, Hiroshi*; Kawaguchi, Kentaro*; Kuma, Susumu*; Miyamoto, Yuki*; Nagasono, Mitsuru*; Nakajima, Kyo*; Yabashi, Itsuo*; Shigemasa, Eiji*; et al.
no journal, ,
Takahashi, Tone; Koizumi, Mitsuo; Mochimaru, Takanori*; Yamaguchi, Ikuto*; Yoshimi, Yuki*; Tanigaki, Minoru*; Goto, Jun*; Harada, Hiroshi*; Masaki, Hiroko*; Ito, Fumiaki*
no journal, ,
no abstracts in English
